Chrysler Concorde 1993 Service Manual page 338

8L - 2 LAMPS
ACTION
• Clean battery terminal clamps and posts. Refer to
Group 8B, Battery/Starter/Generator Service for
proper procedures.
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
• Test for high resistance in headlamp circuits.
• Defective headlamp bulb.
SYMPTOM
Bulbs burn out frequently.
ACTION
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
• Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Group 8W, Wir-
ing Diagrams for component and splice locations.
SYMPTOM
Headlamps are dim with engine running above
idle. Canada cars must have lamps ON.
ACTION
• Test charging system output. Refer to Group 8A,
Battery/Starting/Charging Systems Diagnostics for
proper testing procedures.
• Test for high resistance in headlamp circuits.
• Defective headlamp bulb.
SYMPTOM
Headlamps flash randomly.
ACTION
• Test for poor circuit ground.
• Test for high resistance in headlamp circuits.
• Test condition of headlamp relay.
• Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Group 8W, Wir-
ing Diagrams for component and splice locations.
SYMPTOM
Headlamps do not illuminate.
ACTION
• Test for voltage at headlamp bulbs connectors.
• Test headlamp relay.
• Test headlamp switch.
• Test high-beam headlamp dimmer switch.
• Check for loose or corroded connector terminals or
splices in headlamp circuits. Refer to Group 8W, Wir-
ing Diagrams for component and splice locations.
FOG LAMP DIAGNOSIS
The fog lamp system receives voltage from the
headlamp relay when the low-beam headlamps are
turned ON. The high-beam headlamp dimmer switch
when actuated cancels out voltage feed to the fog
lamp circuit. The fog lamp circuit is protected by a
20 amp fuse located in the fuse panel. Refer to Group
8W, Wiring Diagrams for component location and
circuit information.
SYMPTOM
Fog lamps do not illuminate.
ACTION
• Test fog lamp bulb.
• Test for voltage at fog lamp connector.
• Test for proper fog lamp ground.
• Test circuit fuse.
• Test fog lamp switch.
• Test high-beam headlamp dimmer switch.
• Test headlamp relay.
• Test for open circuit in wire harness.
HEADLAMP SWITCH
The headlamp switch is located on the upper left
side of the instrument panel. Refer to Group 8E, In-
strument Panel for proper service procedures.
HIGH-BEAM HEADLAMP DIMMER SWITCH
The high beam headlamp dimmer is part of the
multi-function switch located on the steering column.
Refer to Group 8J, Turn Signals and Warning Flash-
ers for proper service procedures.